JP2002300493A - Digital television broadcasting receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a digital broadcasting receiver that can inform a user of variation in data broadcasting contents, when the variation exists to the previous channel selection program, after a new channel is selected. SOLUTION: The digital television broadcasting receiver includes two means. In one means, the monitoring of data broadcasting contents to the previous channel selection program, that is carried out before channel selection to other cannels is continuously made, even after the channel selection is made to other channels, in the same transport stream including the channel of the program from a state, where the program with data broadcasting is subjected to the channel selection, thus determining whether the variation in the data broadcasting contents to the previous channel selection program exists. In the other means, a message for showing that the variation exists in the data broadcasting contents of the previous channel selection program is displayed, when the variation exists in the data broadcasting contents of the previous channel selection program.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a digital television broadcast receiver.

[0002]

2. Description of the Related Art When a sports broadcast program such as a baseball broadcast is broadcast, some users always watch another program, and watch the sports broadcast program only when the score changes in the sports broadcast. There is something I want to do.

[0003] However, since it is impossible to predict when the score will fluctuate in a sports relay program, such a user frequently switches channels to a sports relay program while watching a program other than the sports relay program. At present, it checks whether the score has changed.

In a TV system having a two-screen function, two programs can be viewed at the same time. However, since the user needs to watch two programs at a time, the user cannot concentrate on viewing the programs. .

[0005]

SUMMARY OF THE INVENTION According to the present invention, if a change has occurred in the data broadcast content for a previously selected program after a new channel has been selected, the user is notified of the change. It is an object of the present invention to provide a digital broadcast receiver capable of performing such operations.

Further, according to the present invention, if a change occurs in the data broadcasting content for a previously selected program after a new channel is selected, the previously selected program is automatically selected. It is an object of the present invention to provide a digital broadcast receiver that can be operated.

[0007]

A first digital television broadcast receiver according to the present invention changes a state in which a program accompanied by data broadcasting is selected from another program in the same transport stream including a channel of the program. Even after the channel has been selected, the data broadcast content for the previously selected program, which was performed before the selection of another channel, is continuously monitored, so that the data for the previous selected program can be monitored. A means for determining whether or not the broadcast content has changed, and displaying a message indicating that the data broadcast content of the previous selected program has changed if the data broadcast content for the previous selected program has changed. It is characterized by having means for performing.

In the second digital television broadcast receiver according to the present invention, a channel with a data broadcast is tuned to another channel in the same transport stream including the channel of the program. Even after the selection, has the data broadcast content for the previous selected program changed by continuing to monitor the data broadcast content for the previous selected program, which was performed before the selection to another channel? Means for determining whether or not
In addition, a means is provided for automatically selecting a previously selected program when there is a change in data broadcast content for the previously selected program.

A third digital television broadcast receiver according to the present invention is a digital television broadcast receiver comprising a second broadcast wave receiving means for monitoring in addition to a first broadcast wave receiving means for broadcasting a program. When a channel with a data broadcast is selected by the first broadcast wave receiving unit and a channel is selected on another channel, the previously selected program is selected by the second broadcast wave receiving unit. By tuning, even after tuning to another channel, the data broadcast content for the previous selected program is continuously monitored to determine whether or not the data broadcast content for the previous selected program has changed. And a message indicating that the data broadcasting content of the previous selected program has changed if there is a change in the data broadcasting content of the previous selected program. Means is provided.

A fourth digital television broadcast receiver according to the present invention is a digital television broadcast receiver comprising a second broadcast wave receiving means for monitoring in addition to a first broadcast wave receiving means for broadcasting a program. When a channel with a data broadcast is selected by the first broadcast wave receiving unit and a channel is selected on another channel, the previously selected program is selected by the second broadcast wave receiving unit. By tuning, even after tuning to another channel, the data broadcast content for the previous selected program is continuously monitored to determine whether or not the data broadcast content for the previous selected program has changed. And means for selecting the previous selected program by the first broadcast wave receiving means when there is a change in the data broadcast content for the previously selected program. To sign.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows the configuration of a digital television broadcast receiver.

A radio wave from a satellite or a broadcasting station is sent to a tuner 2 via an antenna 1, where high-frequency processing and demodulation are performed. The output from the tuner 2 is sent to the DEMUX circuit 3, where the packet is decoded.

In the DEMUX circuit 3, the packet is
It is separated into MPEG data, which is the program content itself, and auxiliary information such as data broadcast, program guide information, and service information. MPEG separated by DEMUX circuit 3
The data is sent to the AV decoder 4. The additional information separated by the DEMUX circuit 3 is sent to the system controller 20.

In this example, the system controller 20 includes an electrically rewritable nonvolatile memory 21 such as an EEPROM and a volatile memory 22 such as a RAM. The nonvolatile memory 21 stores programs and the like.

The system controller 20 has a DEMUX
The auxiliary information sent from the circuit 3 is stored in the volatile memory 22. A remote controller signal from the remote controller transmitter 12 is input to the system controller 20 via the remote controller light receiver 13.

The system controller 20 includes a tuner 2
And information for channel selection to the DEMUX circuit 3.
Further, the system controller 20 sends an OSD control signal for causing the CRT 8 to display on-screen a data broadcast, a program guide (EPG), various operation screens, and the like to the OSD display circuit 14. The OSD display circuit 14 generates display data (OSD screen data) of the program guide and various operation screens, and sends them to the multiplexer (synthesis circuit) 6 as OSD signals.

The AV decoder 4 demodulates the MPEG data sent from the DEMUX circuit 3. AV decoder 4
The video signal obtained by the above is sent to the multiplexer 6 via the video processing circuit 5. The multiplexer 6 superimposes the display data sent from the OSD display circuit 14 on the video data output from the video processing circuit 5 and sends it to the video output circuit 7. The video signal output from the video output circuit 7 is sent to the CRT 8.

The audio signal obtained by the AV decoder 4 is sent to a speaker 11 via an audio processing circuit 9 and an audio output circuit 10.

FIG. 2 shows a process of acquiring and presenting data broadcast contents.

When the user specifies a channel (service_id), tuning is performed on the transponder where the channel exists (step 1). Next, PAT (Pro
gramAssociation Table) is obtained (step 2).
The PAT includes a channel number and a PMT (ProgramMatrix) related to the channel number in the transponder transmitting the PAT.
pTable) contains information corresponding to the PID (packet identifier). Based on the obtained PAT, the PID of the PMT corresponding to the channel number specified by the user is obtained.

The filtering of the PMT corresponding to the channel number designated by the user is started based on the acquired PID. Thereby, the PMT corresponding to the channel specified by the user is obtained (step 3).

Whether or not the current program on the channel designated by the user includes data broadcast content is determined by analyzing the contents of the acquired PMT.
In the case of BS digital broadcasting, for example, the component ID for each of a video component, an audio component, a subtitle / text component, and a data broadcasting component is determined within a certain range, and the data broadcasting is included in the PMT section acquired by the channel selection. If there is a description of a component ID within the range of the component ID, it is determined that the channel includes data broadcast content.

If the data broadcast content is included, the presence of the data broadcast is displayed (step 4), and the DII of the data broadcast component is obtained (step 5). Data Broadcast Component DII
Contains a plurality of modules (module) and a version number (module version) of each module. Each module is a unit constituting one screen or the like, and is composed of a set of DDBs (Download Data Blook).

Then, a DDB to be developed is acquired based on the acquired DII, and a data broadcast content is rendered based on the acquired DDB (step 6). Also DI
Monitor I (monitor the version number of each module)
(Step 7) If the DII has been changed, the process returns to step 5, where the acquisition of the DII, the acquisition of the DDB, and the drawing processing of the data broadcast content are performed.

In this embodiment, even after a new channel has been selected, the DII monitoring of the data broadcast component for the previous selected program is continuously performed so that the data broadcast for the previous selected program is performed. It is determined whether or not the content has changed. Then, when there is a change in the data broadcasting content for the previously selected program, the fact is notified to the user or the previously selected program is automatically selected.

Such a function is hereinafter simply referred to as a DII monitoring continuation function. Whether to enable or disable the DII monitoring continuation function can be selected by user setting. Even if the DII monitoring continuation function is enabled by the user setting, in order to continue the DII monitoring after changing the channel for the currently viewed program, it is necessary to use the remote control transmitter during the viewing of the program. It is necessary to specify that the program is a DII monitoring continuation target program by pressing a key provided for inputting that the program is a DDI monitoring continuation target program.

FIG. 3 shows the operation of the receiver when a channel selection command for another channel is input while a program accompanied by data broadcasting is being selected.

When a channel selection command for another channel is input in a state where a program accompanied by data broadcasting is selected (step 21), it is determined whether or not the DII monitoring continuation function is valid (step 22). ). Whether or not the DII monitoring continuation function is valid is selected by a user setting.

If the DII monitoring continuation function is valid, it is determined whether or not the currently selected program is designated as a DII monitoring continuation target program (step 23).
If the currently selected program is designated as a DII monitoring continuation target program, DII monitoring (acquisition) of the currently selected program is performed even after the above-mentioned channel selection.
It is determined whether or not is possible (step 24). This determination is based on the channel selected in step 21 and
The determination is made based on whether or not the channel of the currently selected program is included in the same transport stream.

If it is possible to monitor (acquire) DII for the currently selected program even after channel selection, the DII monitoring conditions for the currently selected program are stored (step 25).

The DII monitoring conditions for the currently selected program include the following.

(1) service_id of the currently selected program (2) Data broadcast designation component ID of the currently selected program (3) DII filtering condition (4) DII section version and CRC 32

If necessary, the PTM for the currently selected channel may be added to the monitoring conditions.

Thereafter, the screen is temporarily deleted (screen mute) (step 26), and the filtering for all the service information is temporarily stopped (step 27). Then, the service information filtering for the channel selected in step 21 is started, and the video and audio of the program broadcast on the channel are reproduced (step 28). Also, based on the DII monitoring condition for the previous selected program recorded in step 25, the DII filtering for the previous selected program is performed to monitor whether there is a change in the DII for the previous selected program ( Step 29).

If there is a change in the DII for the previous selected program while monitoring the DII for the previous selected program, it is determined that the data broadcast content for the previous selected program has changed, and the fact is displayed on the screen. indicate. When the DII for the previously selected program is changed, the channel may be automatically selected on the channel of the previously selected program.

If it is determined in step 22 that the DII monitoring continuation function is not valid, if it is determined in step 23 that the currently selected program is not designated as a DII monitoring continuation target program, or if step 24 is performed.
When it is determined that DII cannot be monitored for the currently selected program after channel selection in,
The following processing is performed.

That is, first, the screen is temporarily deleted (screen mute) (step 30), and the filtering for all the service information is temporarily stopped (step 31). Then, the service information filtering for the channel selected in step 21 is started, and the video and audio of the program broadcast on the channel are reproduced (step 32).

In the above embodiment, since only one system is provided for the broadcast wave receiving means (tuner and DEMUX circuit),
If the channel of the currently selected program is not included in the same transport stream, monitoring of the DII for the previously selected program cannot be continued after the new selection.

However, when the digital television broadcast receiver is provided with two systems of broadcast wave receiving means, one for broadcasting the program and the other for monitoring, the DII monitoring for the previously selected program is monitored after the new channel selection. Can be performed by the broadcast wave receiving means, so that even if the newly selected channel and the channel of the currently selected program are not included in the same transport stream, after the new channel is selected, , It is possible to continue monitoring DII for the previously selected program.

[0041]

According to the present invention, if a change has occurred in the data broadcast content for a previously selected program after a new channel has been selected, the user is notified of the change. Will be able to

Further, according to the present invention, if a change in the data broadcast content for the previously selected program has occurred after the selection of a new channel has been performed, the previously selected program is automatically switched to the new program. You will be able to tune in.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a digital television broadcast receiver.

FIG. 2 is a flowchart showing data broadcast content acquisition and presentation processing.

FIG. 3 is a flowchart showing an operation of the receiver when a channel selection command to another channel is input while a program accompanied by data broadcasting is being selected.

[Explanation of symbols]

 Reference Signs List 20 system controller 21 non-volatile memory 22 volatile memory

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5C025 AA30 BA25 BA28 CA02 CA09 CB07 DA01 DA05 5K061 AA09 BB06 BB07 CC45 DD00 DD02

Claims (4)

[Claims] 1. A state in which a program accompanied by data broadcasting is tuned to another channel in the same transport stream including the channel of the program, even after the channel is tuned to another channel. Means for determining whether there has been a change in the data broadcast content for the previous selected program by continuously monitoring the data broadcast content for the previous selected program, which has been performed before the selected channel; Means for displaying a message indicating that there has been a change in the data broadcast content of the previously selected program when there is a change in the data broadcast content for the program. 2. Even after a program accompanied by data broadcasting is tuned to another channel in the same transport stream including the channel of the program, the channel is not tuned to another channel. Means for determining whether there has been a change in the data broadcast content for the previous selected program by continuously monitoring the data broadcast content for the previous selected program, which has been performed before the selected channel; Means for automatically selecting a previously selected program when there is a change in data broadcast content for the program. 3. A digital television broadcast receiver comprising a first broadcast wave receiving means for program broadcasting and a second broadcast wave receiving means for monitoring, wherein the first broadcast wave receiving means performs data broadcasting. When a channel is selected to another channel from a state in which a program accompanied by a channel is selected, the second broadcast wave receiving means selects the previous channel-selected program, so that the channel to another channel is selected. Means for continuously monitoring the data broadcast content for the previous selected program even after tuning, and determining whether or not the data broadcast content for the previous selected program has changed;
Means for displaying a message indicating that the data broadcasting content of the previous selected program has changed when the data broadcasting content of the previously selected program has changed. 4. A digital television broadcast receiver comprising a first broadcast wave receiving means for broadcasting a program and a second broadcast wave receiving means for monitoring, wherein the first broadcast wave receiving means performs data broadcasting. When a channel is selected to another channel from a state in which a program accompanied by a channel is selected, the second broadcast wave receiving means selects the previous channel-selected program, so that the channel to another channel is selected. Means for continuously monitoring the data broadcast content for the previous selected program even after tuning, and determining whether or not the data broadcast content for the previous selected program has changed;
And a means for selecting the previously selected program by the first broadcast wave receiving means when the data broadcast content for the previously selected program fluctuates.